Did the Earth's orbit immediately stabilize into the ~365.25 day cycle at the formation of the solar system, or was it a much longer cycle? And if so, how much time did it take? Is it still changing? |
- Did the Earth's orbit immediately stabilize into the ~365.25 day cycle at the formation of the solar system, or was it a much longer cycle? And if so, how much time did it take? Is it still changing?
- Will we ever run out of music? Is there a finite number of notes and ways to put the notes together such that eventually it will be hard or impossible to create a unique sound?
- How do we generate electricity from fusion?
- If I look at my finger, I can follow it smoothly accross my feild of vision. But if I try to do that facing a wall my vision jumps from side to side instead of snoothly following the lines on the wall. Why is this? And more importantly could I train myself to run my vision amoothly along a wall?
- Can particles spontaneously change from right- to left-handed? Does this give them mass?
- Why can't we detect Hawking Radiation?
- It seems like too large a coincidence that the moon rotates in sync with its revolution around the Earth. Do we have theories on how this came to be, or is it an unsolved mystery?
- Why has vacuum insulation never been used in buildings?
- Is it possible to apply painter's algorithm to the polygonal faces of a polyhedron in order to render said polyhedron subject to perspective projection?
- Is it at all possible that since Oumuamua is an extrasolar object, that it may have disturbed parts of the Oort cloud, sending some other objects our way, or is everything out there too far apart that a collision would be unlikely?
- What happens in a Lead-acid battery that has been discharged too deeply and now is producing noticeable less voltage?
- Why are there no early hominids?
- Are there planets with mountains so high they extend past the atmosphere so you could literally climb your way into zero gravity looking over the curvature of the entire planet?
- Is there a difference between the skin on your face and the skin on your body?
- Please explain me Pi bonds and Sygma bonds f Covalent bonds ??
- How do we know it takes the earth 365 days to revolve around the sun?
- Is it possible to make a 1 osmolar solution of NaCl?
- How come we didn’t evolve to not require sleep?
- How do muscle "knots" occur?
- Why don't we dream under a general anaesthesia?
- Assuming the calorie count posted on a chip bag label will never be 100% exact, what is a realistic range in which the 'true' calorie count would fall?
- Does the earth's magnetic field impact plate tectonics?
- What were the breakthroughs that allowed for precision engineering required for clocks?
| Posted: 05 Dec 2018 03:29 PM PST I'm interested to know if Earth's "year" has always been the same length of time. [link] [comments]  |
| Posted: 06 Dec 2018 06:45 AM PST |
| How do we generate electricity from fusion? Posted: 06 Dec 2018 06:04 AM PST How do we catch the energy from fusing two atoms and generate electricity from that? [link] [comments]  |
| Posted: 05 Dec 2018 09:39 AM PST |
| Can particles spontaneously change from right- to left-handed? Does this give them mass? Posted: 06 Dec 2018 05:06 AM PST I stumbled upon Leonard Susskind's lecture called "Demistifying the Higgs Boson" where he attempts to explain the Higgs mechanism in more depth than just claiming that it's space molasses that give particles mass via physical drag. Here is the lecture https://www.youtube.com/watch?v=JqNg819PiZY I was more or less following his explanations of what condensates and hat-shaped potentials mean as well as how fields can theoretically give particles mass. But at 43:30 he goes into a very specific example: the flipping of electrons from right-handed to left-handed, back and forth, by emitting Z bosons into a condensate to conserve weak hypercharge. He goes as far as saying that the rate at which this flipping occurs is the mass. The emitted Z boson then goes on to also emit and absorb its own hypercharge by emitting "Ziggs bosons". I've done some additional reading and what I've understood so far is that the last part is a toy model dealing with a simplified universe where only the Z boson exists, the "Ziggs" is just that universe's version of the Higgs and the real Higgs phenomenon has more particles and intermediate stages. The problem is that I'm kind of unsure where the facts ended and the toy model began; and some of the facts seem off. Susskind calls the flipping of left/right-handedness of the electron the "spontaneous breaking of chiral symmetry" and upon looking it up on wikipedia it's definitely a thing ( https://en.wikipedia.org/wiki/Chiral_symmetry_breaking ) although I don't understand most of the article. It does seem to say 99% of the mass of nucleons comes from this rather than the Higgs mechanism. The problem is that the Z boson has a hypercharge of 0 so I don't see how it can do what he said it did, which is maintain charge conservation when the particles flip and become "hyperneutral". And how can tiny electrons and quarks be constantly emitting these massive 91GeV Z bosons at normal energies? I believe I'm either missing an important piece of the puzzle or taking an analogy at face value somewhere. I'd be happy to get some explanation on the role of chiral symmetry breaking in giving particles mass. [link] [comments]  |
| Why can't we detect Hawking Radiation? Posted: 05 Dec 2018 11:40 PM PST I was reading that so far Hawking Radiation hasn't been detected. But if we point a radio telescope to a black hole, shouldn't we receive some signs of it? What's the catch? And how can it be found? [link] [comments]  |
| Posted: 05 Dec 2018 11:11 PM PST As a followup, are we familiar with other natural orbiting objects with a similar phenomenon? [link] [comments]  |
| Why has vacuum insulation never been used in buildings? Posted: 06 Dec 2018 12:58 AM PST |
| Posted: 06 Dec 2018 12:22 AM PST I've successfully rendered an orthogonal representation of several polyhedra (a tetrahedron, a cube, and a rectangular prism) by ordering their faces according to the planes in which each polygonal face exists using the plane equation n * <x, y, z> = d. I've successfully rendered the individual faces of polyhedra subject to perspective projection, but I can't figure out how to correctly order them (plane-equation ordering is insufficient). [link] [comments]  |
| Posted: 05 Dec 2018 06:59 PM PST |
| Posted: 05 Dec 2018 08:25 PM PST Such as a car battery that was drained and now only produces 10-11 volts. [link] [comments]  |
| Why are there no early hominids? Posted: 05 Dec 2018 01:43 PM PST Since we evolved from monkeys, how come there isn't any early hominids in the process of evolving still? Would it make sense for life to have an evolution cut-off? [link] [comments]  |
| Posted: 05 Dec 2018 12:46 PM PST |
| Is there a difference between the skin on your face and the skin on your body? Posted: 05 Dec 2018 09:21 AM PST From a physiological standpoint, is there much of a difference? Is there a difference between the biology of male/female skin? [link] [comments]  |
| Please explain me Pi bonds and Sygma bonds f Covalent bonds ?? Posted: 06 Dec 2018 02:14 AM PST |
| How do we know it takes the earth 365 days to revolve around the sun? Posted: 05 Dec 2018 10:41 AM PST |
| Is it possible to make a 1 osmolar solution of NaCl? Posted: 05 Dec 2018 03:33 PM PST |
| How come we didn’t evolve to not require sleep? Posted: 05 Dec 2018 10:16 AM PST it seems pretty straight forward; having more time taken away from sleeping is more time that can be used for other things more beneficial for us. [link] [comments]  |
| Posted: 05 Dec 2018 05:18 AM PST |
| Why don't we dream under a general anaesthesia? Posted: 05 Dec 2018 06:59 AM PST |
| Posted: 05 Dec 2018 10:08 AM PST For example, I ate a bag of Lays BBQ chips that was 230 calories according to the label. Of course, every bag might be slightly different (not to mention the amount of broken chips/crumbs at the bottom that might or might not be consumed). So I'm guessing if I had some sort of hypothetical machine that I could pour the contents of the bag into and have it tell me the real calorie count (or if I had omniscient knowledge of the real calorie count), how much is any one bag (or whatever unit we're considering) going to deviate? For example, could a 230 calorie bag actually range from 228-232, or could it be more? I'm not calorie counting, just curious. [link] [comments]  |
| Does the earth's magnetic field impact plate tectonics? Posted: 05 Dec 2018 09:05 AM PST I figured it was a convenient explanation for why the South pole has a giant continent, while the North pole is ocean --- even though most of earth's landmass is crowded in the Northern hemisphere around the actual pole itself. I would expect the constantly circulating magnetic force plus mantle convection to push the earth's crust into that sort of pear shape (South pole = stem end, North pole = blossom end). Is this a real theory, or is there a different one that better explains our observations? [link] [comments]  |
| What were the breakthroughs that allowed for precision engineering required for clocks? Posted: 05 Dec 2018 02:33 PM PST I like watching blacksmithing videos on youtube. But usually they'll use power tools to remove metal or do anything precise. But I was wondering since clocks far predate power tools what were the steps between some guy with a hammer making square nails and the fine work required for clocks, still one of the finest work out there. [link] [comments]  |
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